| 其他書名 | Presented at the Summer Meeting of the American Association of Physics Teachers, University of Maine, June 28, 1963; [Orono, Maine, June 28, 1963]. |
| 出版 | National Aeronautics and Space Administration, 1963 |
| URL | http://books.google.com.hk/books?id=D7Et0QEACAAJ&hl=&source=gbs_api |